Spisula GRAY 1837
Authors/Creators
Description
SPISULA GRAY, 1837
FIG. 20
UCMP 410439 is provisionally referred to Spisula aff. Spi. eugenensis (Clark, 1925) as it closely resembles this species in general outline. Spisula eugenensis from the Oligocene Eugene Formation in Oregon figured by Hickman (1969, pl. 4, fig. 13), with its broadly rounded, centrally-placed beak and moderately sloping anterior and posterior dorsal margins from the umbo, is nearly identical to the specimen figured here. In addition, the Tsm Caldecott Tunnel specimen show a slight anterior and posterior umbonal ridge that match well with Spi. eugenensis. The Eugene Formation (Oligocene) specimens and the Tsm Caldecott Tunnel (middle Miocene) specimen are very similar but are considered possibly distinct because of the difference in age.
Notes
Files
Files
(1.1 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:91a138cdea48e434e1a3bcbcd86223c0
|
1.1 kB | Download |
System files
(7.1 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:ac5bbd17b8a5f00734c5ba5b074808a2
|
7.1 kB | Download |
Linked records
Additional details
Identifiers
Biodiversity
References
- Gray, J. E. 1837. A synoptical catalogue of the species of certain tribes or genera of shells contained in the collection of the British Museum and the author's cabinet. Magazine of Natural History N. S. 1: 370 - 376.
- Clark, B. L. 1925. Pelecypoda from the marine Oligocene of western North America. University of California Publications, Department of Geological Sciences Bulletin 15: 69 - 136.
- Hickman, C. S. 1969. The Oligocene marine molluscan fauna of the Eugene Formation in Oregon. University of Oregon Museum of Natural History Bulletin 16: 112 pp.